<!-- 城市列表 -->
<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" @click.capture="handleCityClick(item.name)" v-for="item in hot" :key="item.id">
            <div class="button" v-text="item.name"></div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item,key) in cities" :key="key" :ref="key">
        <div class="title border-topbottom" v-text="key"></div>
        <div class="item-list">
          <div class="item border-bottom" @click="handleCityClick(innerItem.name)" v-for="innerItem in item" :key="innerItem.id" v-text="innerItem.name"></div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapState, mapMutations} from 'vuex'
export default {
  name: 'List',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  data () {
    return {
    }
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    ...mapState(['city'])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper, {
      click: true
    })
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}

</script>
<style lang='stylus' scoped>
.border-topbottom
  &:before
    border-color #ccc
  &:after
    border-color #ccc
.border-bottom
  &:before
    border-color #ccc
.list
  overflow hidden
  position absolute
  top 1.58rem
  left 0
  right 0
  bottom 0
  .title
    height .54rem
    line-height .61rem
    padding-left .2rem
    color #666
    font-size .26rem
    background-color #f5f5f5
  .button-list
    padding .1rem .6rem .1rem .1rem
    overflow hidden
    background-color #fff
    .button-wrapper
      float left
      width 33.33%
      .button
        margin .1rem
        padding .1rem 0
        text-align center
        border .02rem solid #ccc
        border-radius .06rem
  .item-list
    background-color #fff
    .item
      line-height .76rem
      padding-left .2rem
</style>
